Trolley.



H. SHAFPERT.

TROLLEY.

APPLIOATIONFILED JULY15,191L 1,040,789. Patented 0015.8, 1912.

FIG. 2

INVENTOR J. Jimez ATTORNEYS HENRY SHAFFERT, OF EAST PITTSBURGH, PENNSYLVANIA.

TROLLEY.

Specification of Letters Patent.

Patented Oct S, 1912.

Application filed July 15, 1912. Serial No. 709,563.

To all whom it may con-cera:

Be it known that I, HENRY Sinxrrnn'r, a citizen ot' the United States of America, residing at East Pittsburgh, in the county ot' Allegheny and State of Pennsylvania, have invented certain new and uset'ul Improvements in Trolleys, of which the following is a speeitication, reference being had therein to the accompanying drawing.

This invention relates to trolley harps, and the primary object of my invention is to furnish the upper end of a trolley pole with a harp provided with means 'for preventing accidental displacement of the harp relatively to a trolley wire, particularly when the harp is passing aro-und curved sections ot' wire, encountering irregularity, or passing under switch-frogs and guide rails,

Another object of this invention is to 'furnish a trolley harp with yieldable retaining members that can be easily and quickly opened to permit of the harp being moved away from the trolley wire, particularly when the trolley pole is being reversed or car allowed to dritt upon a grade.

A 'further object ot' this invention is to accomplish the above results by a mechanical structure that is durable, easy to manipulate, and highly etlicient 'for the purposes for which it is intended.

With the above and other objects in view, the object resides in a novel construction, combination and arrangement of parts to be hereinafter specifically described and then claimed.

Reference will now be had to the drawing, wherein Figure 1; is a` side elevation of the harp. Fig. 2 is a rear elevation of the same. Fig. 3 is a longitudinal sectional view of the harp. Fig. 4 is a cross sectional View taken on the line IV--IV of Fig. 3, and Fig. 5 is a similar view taken on the line V--V of Fig. 1.

Further describing my invention in detail with reference to the drawing wherein like numerals denote corresponding parts throughout: 1 denotes t-he upper end of a trolley pole and formed integral with said pole is a rectangular hollow or box like harp 2 that has side walls 3, a front wall l and a rear wall 5, said side walls extending above the front and rear walls, with the front wall i of a less height than the rear Vall 5, as best shown in Fig, 3.

denotes a transverse pin connecting the walls adjacent to the lront wall 4, and revolubiy mounted upon the pin (S is a circulntferentially grooved trolley wheel 'l' adapted to engage a trolley Wire that extends over the upper edges of the walls el and 5.

8 denotes another transverse pin and this pin is carried by the walls 3 above an opening 9 in the bottom of the harp 2. Pivotally mounted upon the pin h" is a lever l() that extends through the opening 9 and has the lower end thereof enlarged, as at 'l1 and then reduced as at 12, the reduced end 1Q supporting straps 123 and 14:, theI latter having an eye 15 to which a cord 16 is attached. The enlarged end 'll has the :Front side thereof provided with eyes 11.7 and i8, and connected to the eye 18 is a. coiled rctractile spring llt) that has the opposite end thereotf connected to the polcfl. Pivotally connected to the upper end ot the lever Il() by pivot pins 2.0 are the inner ends 2l ol retaining members 22. The retaining members 22 are longitudinally disposed between the walls 3 and the confronting sides ol. said members have overhanging longitudinal Aflanges 2?) adapted to overhang a trolley wire resting upon the wheel 7.

ltlngaging the lower ends` 2l of the retainingl members 22 is a transverse bar Z-.L that is slidably mounted in groovesl 9.5 provided thereit'or in the confronting faces of: the walls 3. Fixed to the transverse bar Q4; are coiled compression springs QG that surround rods 27 connected to said bar. The rods 27 extend through openings 2S provided there- :for at the liront wall fl and the ends of said rods are screw threaded to acconunodate knurled nuts 29.

The rods 27, bar 21k and springs 2G provide ineans for cushioning the movement in one direction of the retaining members 22 opera-ting against the bar Q4, the latter bearing against the member 22 and normally maintaining these latter in an upright position. By adjusting the nuts 29 upon the rods Q7 the tension of the springs 2G can be increased or diminished when desired.

The outer sides oi the retaining members 22 are engaged by headed pins 30 slidably mounted in sockets 3l provided therefor at the upper edges ot the walls 3. Within the sockets 3l are arranged coiled compression springs 32 that retain the pins 30 normally in engagement with the retaining `retaining members 22 are shifted forward in the harp 2, while the chains 35 open the forward ends of the retaining members. With the retaining members in an open position, the trolley harp can be easily re- `moved from the trolley wire, electric conductor .or rail, and when the cord 16 is released the spring 19 restores the lever 10 to its normal position, said spring coperating with the springs 26 and maintaining the re- 1taining members in an upright position, the

springs 26 as above stated bear against the bar 24, the latter engaging with the retaining members. The springs 32 provide means for forcing the retaining members toward each other and normally retain said members in close proximity as clearly shown in Fig. 4:.

What I claim is l. ln a trolley harp, the combination with a pole, of a box like hollow harp carried by the upper end thereof, a lever fulcrumed in said harp and extending through the bottom thereof, a cord attached to the lower end of said lever, parallel retaining mem- `bers pivotally connected to the upper end of said lever within said harp, spring pressed pins engagingl the outer sides of said retaining members, a trolley wheel journaled in said harp below said retaining members, iiexible connections connecting the lower end of said lever and the upper ends of said retaining members and a spring pressed bar engaging the lower ends of said retaining members within said harp.

2. In a trolley harp, the combination with a trolley pole, of a box like harp formed integral with the upper end thereof, a lever fulcrumed in said harp and extending through the bottom thereof, spring pressed retaining members arranged in said harp fand pivotally connected to the upper end of said lever, a trolley wheel journaled in said harp below said retaining members, and `flexible connections between the lower end of said lever and the upper ends of said reltaining members, whereby said retaining members can have the upper ends thereof opened by shifting said lever. i 3. ln a trolley harp, the combination with va trolley pole, of a box like harp formed `integral with the upper lend thereof, a lever `fulcrumed in said harp and extending through the bottom thereof, spring pressed retaining members arranged in said harp and pivotally connected to the upper end Aof said lever, a trolley wheel journaled in lsaid 'harp below said retaining members, flexible connections between the lower end iof said lever and the upper ends of said .retaining members, whereby said retaining :members can have the upper ends thereof ;opened by shifting said lever, means arranged interiorly of said harp for normally maintaining said members in a closed posi- Ition, a cushioning means within said harp for said members, and means arranged ex- ;teriorly of said harp for maintaining the liever in its normal position. In testimony whereof I affix my signature in the presence of two witnesses. HENRY SHAFFERT.

Vitnesses:

MAX H. SnoLovITz, Kari-minnie ERRE'IT.

Copies'of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, ID. C. 

